| Literature DB >> 15089168 |
R Rapaport1, Gang Chen, D Snoke, Steven H Simon, Loren Pfeiffer, Ken West, Y Liu, S Denev.
Abstract
We report on new experiments and theory that unambiguously resolve the recent puzzling observation of large diameter exciton emission halos around a laser excitation spot in two dimensional systems. We find a novel separation of plasmas of opposite charge with emission from the sharp circular boundary between these two regions. This charge separation allows for cooling of initially hot optically generated carriers as they dwell in the charge reservoirs for very long times.Year: 2004 PMID： 15089168 DOI： 10.1103/PhysRevLett.92.117405
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161